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Nickel oxide nanoparticles decrease the accumulation of atrazine in earthworms.

Wenqi Gao1, Yong Yu2, Guanghui Xu2

  • 1College of Geographic Science and Tourism, Jilin Normal University, Siping 136000, China; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.

Journal of Hazardous Materials
|June 11, 2024
PubMed
Summary
This summary is machine-generated.

Nickel oxide nanoparticles (NiO-NPs) reduce the accumulation of the herbicide atrazine (ATZ) in earthworms. This finding suggests NiO-NPs may mitigate ATZ toxicity in soil ecosystems.

Keywords:
AtrazineEarthwormsGut microbiologyNiO-NPsOxidative stress

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Area of Science:

  • Environmental Science
  • Toxicology
  • Nanotechnology

Background:

  • Nickel oxide nanoparticles (NiO-NPs) are prevalent nanomaterials with potential environmental impacts.
  • Atrazine (ATZ), a widely used herbicide, poses risks due to its persistence and bioaccumulation.
  • Co-exposure of earthworms to NiO-NPs and ATZ is an increasing environmental concern.

Purpose of the Study:

  • To investigate the effects of NiO-NPs on the accumulation and toxicity of ATZ in earthworms.
  • To elucidate the underlying mechanisms of NiO-NP interaction with ATZ in earthworm tissues.

Main Methods:

  • Earthworms were exposed to ATZ alone and in combination with NiO-NPs.
  • Oxidative stress markers (ROS) and cellular damage were assessed.
  • High-throughput sequencing was used to analyze gut microbial communities.
  • Changes in the ABC transport system function were evaluated.

Main Results:

  • NiO-NPs significantly reduced reactive oxygen species (ROS) levels induced by ATZ.
  • NiO-NPs mitigated ATZ-induced cellular and tissue damage in earthworm intestines.
  • NiO-NPs altered gut microbiota, increasing Pseudomonas aeruginosa and Aeromonas aeruginosa abundance.
  • Enhanced ABC transporter activity in the gut led to decreased ATZ accumulation.

Conclusions:

  • NiO-NPs can decrease ATZ accumulation and associated toxicity in earthworms.
  • The observed mitigation is linked to altered gut microbiota and enhanced detoxification mechanisms.
  • This study provides insights into the ecotoxicological interactions between nanomaterials and common pollutants.